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TO ALLWHOM IT MAY CONGERN;

Beit known that I, W. W. BIERCE, of Cleveland, in the county ofCuyahoga, and State of Ohio, have invented certain new and usefulImprovements in an Apparatus for Garburetting Gas; and I do hereby.declaro that the following is a full and complete description of theconstruction and operation of the same, reference being had to theaccompanying drawings, making a part of this'specifcation, in whichiFigure 1 is a perspectivev'iew of the apparatus.

Figure 2 is a vertical longitudinal section.

Like letters 'of reference refer to like parts inthe views. v

This apparatus consists of a ygas-tight zinc galvanized iron box orcase, A, iig. 1, which may bc of any convenient shape and size,according to the required capacity of the apparatus. From the centre ofthe bottom of this case ascends'the tube or pipe B, on the threecorresponding sides of which are cut 4the lengthened slots C. D is aboard or iioat of soft wood, to which is attached by the pins E a sheetof perforated tin or a wire gauze F, ofk the shape and size of theiloat. To this perforated tin is connected the sleeve G, which-opensinto the space E between the oatand tin. It will be seen that thisvsleeve encascs the pipe B, upon which it slides, so that when the oatis at the bottom of the box, as shown in the drawing, it is of justsuilicient length to cover 4'the slot above referred to. The surface ofthe perforated plate is covered, with a sheet of cotton iiannl orbatting, F, or any other material of a suitably brous texture. Thisflannel is made suiiciently large as to allow of its depending from thetop to alittle distance below the float, and thereby surrounding it uponall sides, enclosing the space E and making oithe same a gas-chamber, towhich reference will hereafter be made. This box isprovided with acover, H, in which are the two pipes IJ, I being -the eduction and J thesupply pipe. Either, however, may be used ,for this purpose. The supplypipe is fitted with a screw-cap, by the means of which it is madegas-tight. K is a shield surrounding the induction' pipe B, the upperend of whichis soldered to the pipe and the lower spreading end to thetop of the box or' cover. The purpose of thishshield is to prevent theescape of the gas. It also serves as a brace to support the pipe.

Having thus described the apparatus, the practical operation of the'sameis as follows: A certain carburetting fluid, as any of the hydrocarbons,is poured into the box through the supply pipe J, the quantity beingmore or less according to the number of burnersV or gas consumed.` Theboard D then floats upon the fluid and rises up 'in the directionindicated by the dotted lines L, at the same time pushingthe tube G upinto the shield, the dependent sides of the cotton covering F being thusimmersed in the duid; therefore by capillary action theentire'pie'cesoon becomes charged with the liuid, and is thereby diffused over alargeamount of surface, in consequence of which' a much more rapidevaporation takes place than could be if the iluid lay undiscriminatedat the bottom of the box. The vapor thus eliminated from the iuidascends to the top of the'box, through which thc gas to be treated ismade to pass, as follows: the gas from the metre,to which the apparatusis attached, is inducted into' the box by the pipe B, through which itdescends into thechamber E or space between the board and perforatedtin. It will be seen that the gas can escape from the pipe only atthatcertain point and through the section of the slot C embraced in thechamber. `The lower sections of the pipe andslotbeing immersed in theiluid prevents the gas from descending below the board or loat,'aridwhereas the upper section of the pipe and slot is covered by the slidingpipe Gr, it is therefore prevented from escaping above the float andcotton covering; hence the gas, in order to ascend to the top of thebox, must pass through the perforated tin or gauze and cotton covering,and in so doing become thereby charged with'the vapor from the fluid;`andafter passing p through this it is further acted upon by theaccumulated vapors filling the upper part of the box, through which itpasses, and from which it escapes through the eduction pipe I, fromthence to the burners. By this arrangement of vthe float and the slottedpipe, it will be `obvious that the amount of iiuid which may bein theboxcan in no wary obstruct the induction of the gas unless it is entirelyfull, as a certain section of the slot is at all times uncovered betweenthe top and bottomof the ioat at whatever distance it may be from thetop of thc box, thus the fluid covering the pipe below the float, andthe sliding pipe G all above. I l

Of the economy resulting from the use of this apparatus, in connectionwith the metre, I instance thefollowing: By carburetting the gas in themanner dcscribedis to increase largely the amount of light from a givenquantity ofgas and thereby enable the consumc'iato increase the numberof burners, or `by the reduction of the mina.- g

number of burners, or by reducing the 'size ot' the samereduce theconsumption and expense, and at the same time receiving an equal volumeef light,- which will, under ordinary circumstances, make a saving of a.large per cent. in the first cost of gas. The .peculiar construction ofthis apparatus is such as to fully charge the inductive gas with thecarburetting l'uid, for it is impossible for it to pass through theapparatus without being thus charged, which is not the case with manyapparatus constructed `for this purpose; hence the-gas is with certaintyand directly actedv upon by theuid or the vapor therefrom Without anycomplica-ted mechanicall appliances. It is also convenient in form andsize, and easily attached to the metre, requiring but little skill tomanageit, and that with but small expense and with perfect safety.

.Whatl claim as my improvement, and desire to secure by Letters Patent,is

1. The iioat D, perforated tin F, and covering F, as arranged, incombinationwith the sleeve G, tube B, and slot C, for the purpose and inthemanner asshbstantially described.

2. The shield K, pipe B, and sleeve G, in combination with the case A,for the purpose and in the manner as herein set forth.

W. W. MERGE Witnesses:` 1

J. W. BURRIDGE, W, H. BURRIDGE.

